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Steemit promotes free speech....I used a government sensoring free speech as an example...I am currently studying all coins....right now, the coin bubble may have popped....in the meantime, there are 4-5 that i favor but have not purchased yet because there is current high risk the entire industry about drop 50% to 80% ....watching closely

Steemit promotes original content with credit given where it's not so original. Free speech has nothing to do with it.

What about making money on the way down?

can you sell short a digital currency? Is that even possible ?

I don't see why not.